Sofa piping



FIG. 1 is a front perspective view of exemplary sofa piping;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof.

The dashed broken line showing in the Figures is for illustrativepurposes only and forms no part of the claimed design.

CLAIM The ornamental design for sofa piping, as shown and described.